I'm testing in-app purchases with sandbox. In paymentQueue updateTransactions method I catch to transaction states then if state purchase or restore I try to unlock content(user has been subscribed then turn mode to Premium).
so far everything is works perfectly. The user would be purchase item, then user goes to Premium mode. If user removed application from his device, restore case also works and turn mode to premium.
But somehow, After user clicked to restore button in that time no issue occurs. But if user close to app then open twice user would see a purchased cases again. Some purchase cases works again without any purchase attempt.
I understand is that after adding SKProductQueue observer updatedTransaction method calling. Then somehow purchase case is works.
It's very hard to describe what I'm getting into but basically after user clicked to restore button next time updatedTransaction method work suddenly and purchased case works.Also I will put buy and restore functions but these are correct it seems like.
Any idea would be grateful!
func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
for transaction in transactions {
print(transaction.transactionState.status(), transaction.payment.productIdentifier)
switch transaction.transactionState {
case .purchasing : break
case .purchased:
// set true for premium mode then turn back to main screen from purchase screen.
UserDefaults.standard.setValue(true, forKey: "isUserSubscribe")
UserDefaults.standard.synchronize()
getBackMainScreenProvider.Instance.returnMain()
print("purchased")
queue.finishTransaction(transaction)
break
case .failed:
queue.finishTransaction(transaction)
break
case .restored:
// this case is works more than once but if user has more than purchase
// but its okay.
UserDefaults.standard.setValue(true, forKey: "isUserSubscribe")
UserDefaults.standard.synchronize()
getBackMainScreenProvider.Instance.returnMain()
AppDelegate.restoreClickFlag = true
queue.finishTransaction(transaction)
break
default : break
}
}
}
func purchase (product: IAPProduct) {
guard let productToPurchase = products.filter({ $0.productIdentifier == product.rawValue }).first else { return }
let payment = SKPayment(product: productToPurchase) // request to the Appstore in order to payment process
paymentQueue.add(payment)
print("nasıl...")
}
func restorePurchases () {
print("restoring purchases...")
paymentQueue.restoreCompletedTransactions()
}
Related
I created an In-App Purchase feature for the app, using an Auto-Renewing Subscription. The problem is that I'm not sure how to check the purchase status, whether the subscription has run out or is still active.
Here's where I try saving the purchased status:
func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
print("add payment")
for transaction: AnyObject in transactions {
let trans = transaction as! SKPaymentTransaction
print(trans.error)
switch trans.transactionState {
case .purchased:
print("buy ok, unlock IAP HERE")
print(p.productIdentifier)
let prodID = p.productIdentifier
switch prodID {
case "com.test.UnlockTools.Subscription1":
print("tool set 1 unlocked")
uTool1()
print("tool set 2 unlocked")
uTool2()
print("tool set 3 unlocked")
uTool3()
UserDefaults.standard.set(true, forKey: "isSubbed")
default:
print("IAP not found")
}
queue.finishTransaction(trans)
case .failed:
print("buy error")
queue.finishTransaction(trans)
break
default:
print("Default")
break
}
}
}
This is where I call the UserDefaults and allow or deny button interaction:
override func viewDidLoad() {
super.viewDidLoad()
if(SKPaymentQueue.canMakePayments()) {
print("IAP is enabled, loading")
let productID: NSSet = NSSet(object: "com.test.UnlockTools.Subscription1")
let request: SKProductsRequest = SKProductsRequest(productIdentifiers: productID as! Set<String>)
request.delegate = self
request.start()
} else {
print("please enable IAPS")
}
status = UserDefaults.standard.bool(forKey: "isSubbed") ?? false
if status == true {
unlockTool1.isUserInteractionEnabled = true
unlockTool2.isUserInteractionEnabled = true
unlockTool3.isUserInteractionEnabled = true
} else {
unlockTool1.isUserInteractionEnabled = false
unlockTool2.isUserInteractionEnabled = false
unlockTool3.isUserInteractionEnabled = false
}
}
If I find out the status then I will be able to save the state as true/false. I tried using UserDefaults with some success. Not sure if I placed the code in the best location though.
If the subscription is still active, I'd like to allow the user to click a button, and deny the button click if the subscription has run out.
I'll add more code if needed. Any help would be greatly appreciated.
The only way to check the subscription status is to verify the receipt with Apple to see if it's still valid using their /verifyReceipt endpoint - docs.
What you could do is cache some expiration date after the purchase and use that to check if the subscription is valid. If it's passed the expiration date you can re-check the receipt with Apple to see if it's renewed. There are also edge cases where a user is refunded and their subscription is cancelled before the expiration date - you should update your receipts periodically with Apple to check this case. Ideally, this should all be happening server side as well to avoid piracy.
Here's a great post that summarizes the nauces of Apple subscriptions very well: iOS Subscriptions are Hard
When a button is pressed I use storekit to purchase it. But the issue is the createItems() function and segue are performed before the purchase is confirmed. Is there any way to do this?
func addItems() {
IAPService.shared.purchase(product: .nonConsumable)
createItems()
performSegue(withIdentifier: "returnItems", sender: self)
}
I need the function + segue to be run after the in app purchase has been completed.
IAP function:
func purchase(product: IAPProduct) {
guard let productToPurchase = products.filter({ $0.productIdentifier == product.rawValue}).first else {return}
let payment = SKPayment(product: productToPurchase)
paymentQueue.add(payment)
}
payment Queue function
func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
for transaction in transactions {
print(transaction.transactionState.status(), transaction.payment.productIdentifier)
switch transaction.transactionState {
case .purchasing:
break
default:
queue.finishTransaction(transaction)
}
}
}
One simple solution is for the paymentQueue method, when it is called because the purchase has taken place, to post a Notification thru the NotificationCenter. Any other view controller that needs to be informed instantly when the purchase takes place will have registered for this Notification, and thus will hear about it at that moment and can take any desired action.
Keep in mind, too, that you are going to record somewhere, typically in UserDefaults, the fact that the purchase has occurred. Thus any subsequent view controller can always check in its viewDidLoad or viewWillAppear to see whether the purchase has happened, and can modify its behavior accordingly.
When the user calls restorePurchases(), the non-consumable com.premium is restored even thought they do not own it.
Here are the functions that are responsible for the restoring purchases and purchasing IAPs. This is only an issue with non-consumable IAPs.
There is no issue with purchasing. And if the user attempts to purchase an IAP that they already have, it is simply restored. Thank you for looking in to this.
func restorePurchases() {
SKPaymentQueue.default().add(self)
SKPaymentQueue.default().restoreCompletedTransactions()
}
func paymentQueueRestoreCompletedTransactionsFinished(_ queue: SKPaymentQueue) {
print("transactions restored")
for transaction in queue.transactions {
let t: SKPaymentTransaction = transaction
let prodID = t.payment.productIdentifier as String
print("starting restoring")
switch prodID {
case "com.premium":
print("restoring ads")
removeAds()
case "com.cash":
print("we dont restore coins")
case "com.level":
print("we dont restore levels")
default:
print("can't restore")
}
}
Here is my payment queue also.
func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
print("add paymnet")
for transaction:AnyObject in transactions {
let trans = transaction as! SKPaymentTransaction
print(trans.error)
switch trans.transactionState {
case .purchased:
print("buying, ok unlock iap here")
print(p.productIdentifier)
let prodID = p.productIdentifier as String
switch prodID {
case "com.premium":
print("buying ads")
removeAds()
case "com.cash":
print("buying coins")
addCoins()
case "com.level":
print("buying levels")
addLevels()
default:
print("can't buy")
}
queue.finishTransaction(trans)
break;
case .failed:
print("buy error")
queue.finishTransaction(trans)
break;
default:
print("default")
break;
}
}
}
You should not update any purchase status in paymentQueueRestoreCompletedTransactionsFinished. This function just lets you know that the restoration process has completed. You could use this to update your UI or display an alert or something.
The restoration process delivers the transactions to be restored to the updatedTransactions function where you handle the .restored state in the same way that you handle the .purchased state.
Essentially "restore" just replays the purchase transaction process for non-consumable and auto-renewing subscription purchase types.
I have completed a small app where I have a non-consumable purchase option. It is on the App Store.
The purchase of the product runs OK. It's my Restore Purchase function that seems to do nothing.
I have added this code for the Restore Purchase #IBAction:
#IBAction func restorePurchases(sender: AnyObject) {
SKPaymentQueue.defaultQueue().addTransactionObserver(self)
SKPaymentQueue.defaultQueue().restoreCompletedTransactions()
}
But nothing happens when I hit the restore purchase button.
I think I have to add a function that checks if the restore was successful or not. Am planning to amend code to the following:
#IBAction func restorePurchases(sender: AnyObject) {
SKPaymentQueue.defaultQueue().addTransactionObserver(self)
SKPaymentQueue.defaultQueue().restoreCompletedTransactions()
}
func paymentQueue(queue: SKPaymentQueue!, updatedTransactions transactions: [AnyObject]!) {
for transaction:AnyObject in transactions {
if let trans:SKPaymentTransaction = transaction as? SKPaymentTransaction{
switch trans.transactionState {
case .Restored:
SKPaymentQueue.defaultQueue().finishTransaction(transaction as SKPaymentTransaction)
var alert = UIAlertView(title: "Thank You", message: "Your purchase(s) were restored.", delegate: nil, cancelButtonTitle: "OK")
alert.show()
break;
case .Failed:
SKPaymentQueue.defaultQueue().finishTransaction(transaction as SKPaymentTransaction)
var alert = UIAlertView(title: "Sorry", message: "Your purchase(s) could not be restored.", delegate: nil, cancelButtonTitle: "OK")
alert.show()
break;
default:
break;
}
}
}
Will this do the trick?
I have been through every thread in relation to effecting Restore Purchase transactions, and my research has led me to the above. So I don't think this is a duplicate of a question, but perhaps may clarify how to successfully restore purchases for others facing my similar situation.
Your codes looks pretty fine for the most part, although some parts seem to be from older tutorials . There is some changes you should make, one of them is that you need to call your unlockProduct function again.
This is the code I use (Swift 3).
/// Updated transactions
func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
for transaction in transactions {
switch transaction.transactionState {
case .purchasing:
// Transaction is being added to the server queue.
case .purchased:
// Transaction is in queue, user has been charged. Client should complete the transaction.
defer {
queue.finishTransaction(transaction)
}
let productIdentifier = transaction.payment.productIdentifier
unlockProduct(withIdentifier: productIdentifier)
case .failed:
// Transaction was cancelled or failed before being added to the server queue.
defer {
queue.finishTransaction(transaction)
}
let errorCode = (transaction.error as? SKError)?.code
if errorCode == .paymentCancelled {
print("Transaction failed - user cancelled payment")
} else if errorCode == .paymentNotAllowed { // Will show alert automatically
print("Transaction failed - payments are not allowed")
} else {
print("Transaction failed - other error")
// Show alert with localised error description
}
case .restored:
// Transaction was restored from user's purchase history. Client should complete the transaction.
defer {
queue.finishTransaction(transaction)
}
if let productIdentifier = transaction.original?.payment.productIdentifier {
unlockProduct(withIdentifier: productIdentifier)
}
case .deferred:
// The transaction is in the queue, but its final status is pending external action
// e.g family member approval (FamilySharing).
// DO NOT freeze up app. Treate as if transaction has not started yet.
}
}
}
Than use the delegate methods to show the restore alert
/// Restore finished
func paymentQueueRestoreCompletedTransactionsFinished(_ queue: SKPaymentQueue) {
guard queue.transactions.count != 0 else {
// showAlert that nothing restored
return
}
// show restore successful alert
}
/// Restore failed
func paymentQueue(_ queue: SKPaymentQueue, restoreCompletedTransactionsFailedWithError error: NSError) {
/// handle the restore error if you need to.
}
Unlock product is just a method I am sure you already have too.
func unlockProduct(withIdentifier productIdentifier: String) {
switch productIdentifier {
/// unlock product for correct ID
}
}
As a side note, you should move this line
SKPaymentQueue.default().add(self)
out of your restore and buy function and put it in viewDidLoad.
Apple recommends you add the transaction observer as soon as your app launches and only remove it when your app is closed. A lot of tutorials unfortunately dont teach you this correctly. This way you unsure that any incomplete transactions e.g due to network error, will always resume correctly.
https://developer.apple.com/library/content/technotes/tn2387/_index.html
In my real projects my code for IAPs is in a Singleton class so I would actually using delegation to forward the unlockProduct method to my class that handles gameData. I can than also make sure the observer is added at app launch.
Hope this helps
Took me a while to suss out, but the reason my StoreKit was not updatingTransactions and restoring the purchase was because of a broken Configuration setting in my app's Scheme. When I set that to None, it worked!
In Xcode I went into Edit>Scheme (image1) clicked on the Run>Options tab and selected None for StoreKit Configuration (image2). I also went on my physical device, and logged out of my personal Apple purchase account (Settings >Your Name/Pic at the Top > Media & Purchases > Sign Out) (image3). And finally, this step might not be critical, but I logged into my test sandbox account on my device at the bottom of the Settings>App Store menu(image4 and image5). That is an account that I setup in developer.apple.com under test users.
My sandbox test account can purchase non-consumable item and restore it. Everything works. However, if the account have not purchased the item before, pressing the restore button does nothing. I see nothing in the debug panel. I'm expecting iOS to detect if a certain user has purchased the item or not, if not then display a message asking them to buy it. Does it work like that or the current behavior is totally acceptable?
Here is the restore purchase code (Swift) connecting to a button inside the main storyboard:
#IBAction func restoreButtonPressed(sender: UIButton) {
statusLabel.text = "Status: Restoring Purchase"
SKPaymentQueue.defaultQueue().addTransactionObserver(self)
SKPaymentQueue.defaultQueue().restoreCompletedTransactions()
}
Other implemented methods include:
Works for normal purchase
func paymentQueue(queue: SKPaymentQueue!, updatedTransactions transactions: [AnyObject]!) {}
Works for normal restore
func paymentQueueRestoreCompletedTransactionsFinished(queue: SKPaymentQueue!) {}
Never see messages coming from this method before
func paymentQueue(queue: SKPaymentQueue!, restoreCompletedTransactionsFailedWithError error: NSError!) {}
Thanks!
You can check if the queue has any returned transactions, and if not it means that there are no purchases to restore:
func paymentQueueRestoreCompletedTransactionsFinished(queue: SKPaymentQueue!) {
if queue.transactions.count == 0 {
let alert = UIAlertView()
alert.title = "Oops"
alert.message = "There are no purchases to restore, please buy one"
alert.addButtonWithTitle("Buy")
alert.addButtonWithTitle("Cancel")
alert.show()
}
}
you can try this :
func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
for transaction in transactions {
switch transaction.transactionState {
case .purchasing: print("Payment is being processed")
case .purchased: print("USER PURCHASED YOUR PRODUCT")
SKPaymentQueue.default().finishTransaction(transaction)
case .restored:
if transaction.original?.transactionIdentifier != nil { // this identifier uniquely identifies a completed tansaction.
// queue.restoreCompletedTransactions()
print("THE BUYER BOUGHT THIS PRODUCT BEFORE")
} else {
/*
display UIAlertController showing an error
there is no receipts, user never purchased this product.
*/
}
case .failed:
self.dismiss(animated: true, completion: nil)
SKPaymentQueue.default().finishTransaction(transaction)
case .deferred:
print("pending")
#unknown default:
break
}
}
}